1cb54fc1372d7a30079463584198a8054ffc16c589a3345aa4b52b82878e7e87

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
03-05-2024 20:28

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General

Target

2024-05-03_95662196f81bf1a718dafd40e5e95cda_cryptolocker.exe
Size

47KB
MD5

95662196f81bf1a718dafd40e5e95cda
SHA1

89c05d06fdf8c48ffc367bb39fc1afc8d59b15f5
SHA256

1cb54fc1372d7a30079463584198a8054ffc16c589a3345aa4b52b82878e7e87
SHA512

3488ac844d1affa5dc200ccf0860317dca38f5c32a611ca64141cb8b14db4d683e782537c8c1774b2ad0152bd8a9678ed5dc26c27fb8b5413addf33071937c4c
SSDEEP

768:79inqyNR/QtOOtEvwDpjBKccJVODvccwDF27:79mqyNhQMOtEvwDpjBzck1W87

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/3028-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b00000001431b-11.dat	CryptoLocker_rule2
behavioral1/memory/3028-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2540-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/3028-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b00000001431b-11.dat	CryptoLocker_set1
behavioral1/memory/3028-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2540-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2540	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
3028	2024-05-03_95662196f81bf1a718dafd40e5e95cda_cryptolocker.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3028 wrote to memory of 2540	3028	2024-05-03_95662196f81bf1a718dafd40e5e95cda_cryptolocker.exe	28
PID 3028 wrote to memory of 2540	3028	2024-05-03_95662196f81bf1a718dafd40e5e95cda_cryptolocker.exe	28
PID 3028 wrote to memory of 2540	3028	2024-05-03_95662196f81bf1a718dafd40e5e95cda_cryptolocker.exe	28
PID 3028 wrote to memory of 2540	3028	2024-05-03_95662196f81bf1a718dafd40e5e95cda_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-03_95662196f81bf1a718dafd40e5e95cda_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-03_95662196f81bf1a718dafd40e5e95cda_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3028
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2540

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
47KB

MD5
5295c8bad4c109579e5b1be9652e1a03

SHA1
c9281e8402ec786c06885d2dd1a38c6aba949484

SHA256
f8e3d3acfa3412e235549549aeac71a7a2fd16887c811c42b68d043ffd658fa9

SHA512
82f38e9cbae1e0cfe7cdcea3356f73069993ae974c4479da33347af5c3dca1a7c39ee24155109e4625aedfd9c5635e2d8a4e5dfe2b969bed59f2476c948c7847

Download Submit
memory/2540-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2540-18-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2540-25-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/3028-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3028-2-0x0000000000350000-0x0000000000356000-memory.dmp

Filesize
24KB

Download
memory/3028-1-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/3028-9-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/3028-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download